Investigation of improving the drought tolerance in persian petunia (Petunia sp.) by exogenous application of salicylic acid and gibberellic acid
Plants respond to water deficit through several mechanisms. Among which, plant hormones play an important role in induction to abiotic stress tolerance. To bring this issue closer, an experiment was conducted to examine whether salicylic acid (SA) and gibberellic acid (GA3) exogenous applications t...
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| Format: | Article |
| Language: | English |
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University of Life Sciences in Lublin - Publishing House
2021-02-01
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| Series: | Acta Scientiarum Polonorum: Hortorum Cultus |
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| Online Access: | https://czasopisma.up.lublin.pl/index.php/asphc/article/view/822 |
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| author | Morteza Goldani Ali Dolatkhahi Mahdi Parsa Navid Vahdati Zahra Rasouli |
| author_facet | Morteza Goldani Ali Dolatkhahi Mahdi Parsa Navid Vahdati Zahra Rasouli |
| author_sort | Morteza Goldani |
| collection | DOAJ |
| description |
Plants respond to water deficit through several mechanisms. Among which, plant hormones play an important role in induction to abiotic stress tolerance. To bring this issue closer, an experiment was conducted to examine whether salicylic acid (SA) and gibberellic acid (GA3) exogenous applications through foliar spray could alleviate detrimental effects of water deficit on Persian petunia. Treatments consisted of water stress in three levels: 100% field capacity (F.C.) as control, 50, and 25% F.C linked with different concentrations of GA3 and SA sprayed at four levels (0, 100, 200 and 300 mg L–1). Results showed that the dry and fresh biomass, leaf area, photosynthetic pigments levels, relative water content (RWC) and the total number of flowers were significantly (P≤0.01) reduced in response to water deficit. However, free proline concentration and root-to-shoot ratio significantly increased in stressed plants. Plants subjected to severe water stress (25% F.C.), exhibit about 66% stomatal conductance rate lower than the plants grown at 100% F.C. The results showed that SA-treated plants exhibited reduced negative effect of water stress on most of the qualitative and quantitative attributes compared to control, while GA3 application had little impact on studied traits. Importantly, stomatal conductance and RWC were improved in water-stressed plants treated with SA. Moreover, SA-treated plants produced more flowers at all water deficit levels compared to GA3 sprayed plants. It can be concluded that Persian petunia plants respond to water deficit through adaptive changes at biochemical and morphological levels and that adverse effects of water deficit could be alleviated by exogenous application of SA.
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| first_indexed | 2024-03-09T00:17:15Z |
| format | Article |
| id | doaj.art-634d12a80f9e4e8a8f406b2a42a2edf0 |
| institution | Directory Open Access Journal |
| issn | 1644-0692 2545-1405 |
| language | English |
| last_indexed | 2024-03-09T00:17:15Z |
| publishDate | 2021-02-01 |
| publisher | University of Life Sciences in Lublin - Publishing House |
| record_format | Article |
| series | Acta Scientiarum Polonorum: Hortorum Cultus |
| spelling | doaj.art-634d12a80f9e4e8a8f406b2a42a2edf02023-12-12T07:51:21ZengUniversity of Life Sciences in Lublin - Publishing HouseActa Scientiarum Polonorum: Hortorum Cultus1644-06922545-14052021-02-0120110.24326/asphc.2021.1.4Investigation of improving the drought tolerance in persian petunia (Petunia sp.) by exogenous application of salicylic acid and gibberellic acidMorteza Goldani0Ali Dolatkhahi1Mahdi Parsa2Navid Vahdati3Zahra Rasouli4Department of Agrotechnology, Ferdowsi University of Mashhad, Mashhad, IranDepartment of Horticultural Science and Landscape, Ferdowsi University of Mashhad, Mashhad, IranDepartment of Agrotechnology, Ferdowsi University of Mashhad, Mashhad, IranDepartment of Horticultural Science and Landscape, Ferdowsi University of Mashhad, Mashhad, IranDepartment of Agrotechnology, Ferdowsi University of Mashhad, Mashhad, Iran Plants respond to water deficit through several mechanisms. Among which, plant hormones play an important role in induction to abiotic stress tolerance. To bring this issue closer, an experiment was conducted to examine whether salicylic acid (SA) and gibberellic acid (GA3) exogenous applications through foliar spray could alleviate detrimental effects of water deficit on Persian petunia. Treatments consisted of water stress in three levels: 100% field capacity (F.C.) as control, 50, and 25% F.C linked with different concentrations of GA3 and SA sprayed at four levels (0, 100, 200 and 300 mg L–1). Results showed that the dry and fresh biomass, leaf area, photosynthetic pigments levels, relative water content (RWC) and the total number of flowers were significantly (P≤0.01) reduced in response to water deficit. However, free proline concentration and root-to-shoot ratio significantly increased in stressed plants. Plants subjected to severe water stress (25% F.C.), exhibit about 66% stomatal conductance rate lower than the plants grown at 100% F.C. The results showed that SA-treated plants exhibited reduced negative effect of water stress on most of the qualitative and quantitative attributes compared to control, while GA3 application had little impact on studied traits. Importantly, stomatal conductance and RWC were improved in water-stressed plants treated with SA. Moreover, SA-treated plants produced more flowers at all water deficit levels compared to GA3 sprayed plants. It can be concluded that Persian petunia plants respond to water deficit through adaptive changes at biochemical and morphological levels and that adverse effects of water deficit could be alleviated by exogenous application of SA. https://czasopisma.up.lublin.pl/index.php/asphc/article/view/822ornamental flowerphotosynthetic pigmentsprolinerelative water contentstomatal conductancewater deficit |
| spellingShingle | Morteza Goldani Ali Dolatkhahi Mahdi Parsa Navid Vahdati Zahra Rasouli Investigation of improving the drought tolerance in persian petunia (Petunia sp.) by exogenous application of salicylic acid and gibberellic acid Acta Scientiarum Polonorum: Hortorum Cultus ornamental flower photosynthetic pigments proline relative water content stomatal conductance water deficit |
| title | Investigation of improving the drought tolerance in persian petunia (Petunia sp.) by exogenous application of salicylic acid and gibberellic acid |
| title_full | Investigation of improving the drought tolerance in persian petunia (Petunia sp.) by exogenous application of salicylic acid and gibberellic acid |
| title_fullStr | Investigation of improving the drought tolerance in persian petunia (Petunia sp.) by exogenous application of salicylic acid and gibberellic acid |
| title_full_unstemmed | Investigation of improving the drought tolerance in persian petunia (Petunia sp.) by exogenous application of salicylic acid and gibberellic acid |
| title_short | Investigation of improving the drought tolerance in persian petunia (Petunia sp.) by exogenous application of salicylic acid and gibberellic acid |
| title_sort | investigation of improving the drought tolerance in persian petunia petunia sp by exogenous application of salicylic acid and gibberellic acid |
| topic | ornamental flower photosynthetic pigments proline relative water content stomatal conductance water deficit |
| url | https://czasopisma.up.lublin.pl/index.php/asphc/article/view/822 |
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